[RESOLVED] Brightness function keys not working on 12th gen Intel system running Pop_OS!

[Username009]

If the issue comes back after a cold boot (full power off, then power on) check this:

[SOLVED-GUIDE] 12th gen not sending XF86MonBrightnessUp / Down

I’ve also recently encountered this problem, or a variant of it. I’m using Ubuntu 22.04.1 with kernel 6.0.0-1014-oem on a 12th-gen laptop. I have the hid_sensor_hub module correctly blocklisted, and lsmod confirms it isn’t loaded (and I’m not at all interested in using/having the ALS sensor). Symptoms I can manually adjust the brightness using the brightnessctl utility, the problem is only that the backlight keyboard keys aren’t having any effect (including in xev or showkey). (Which means …

This command will fix it temporarily:

echo i2c-FRMW0001:00 | sudo tee /sys/bus/i2c/drivers/i2c_hid_acpi/bind